UF596 Ignition Coil Pack and 93501 Spark Plugs Set of 4 - Reliable

In this review the set of 4 UF596 ignition coil packs paired with 93501 spark plugs is assessed for owners of Toyota, Scion and Lexus 1.8L engines who need a straightforward replacement kit. The bottom line: this kit is for drivers who want a complete ignition refresh that matches OE fit and aims to resolve common ignition issues like misfires and a check engine light without extra parts hunting. It installs like an OE replacement and is built to deliver stable high-voltage output under typical driving conditions.

Key Features

• Multivehicle Compatibility: The kit covers many 1.8L L4 models including Corolla, Matrix, Prius, Prius V, Prius Plug-In, Scion xD and Lexus CT200h, saving time shopping for separate parts.
• Durable coil construction: Coils use silicon steel, a high-pressure rubber sleeve and epoxy resin to resist cracking and short-circuiting for longer service life.
• Quality winding: Germany-imported venameled wire is used in the coils to support stable high-voltage output across engine speeds.
• Iridium spark plugs: The 93501 plugs have fine iridium electrodes and CNC-machined metal parts for reliable ignition, quicker starts and reduced wear.
• OE-level fit: Coil OE numbers and spark plug replacement references are provided so the set matches original form, fit and function for easier installation.
• Tested reliability: All components undergo strict quality tests to address common ignition faults like stalling, rough idle and poor fuel economy.

Who It's For

This kit is best for DIYers and independent shops working on 1.8L L4 Toyota, Scion or Lexus models that list UF596/UF619/C1714 coil references and 93501/LKAR7BIX-11S spark plugs as compatible replacements. It is a practical option for drivers experiencing misfires, engine hesitation or a persistent check engine light who want an all-in-one replacement set.

It is not aimed at owners of other engine sizes or vehicles without the listed compatibility. Buyers who require OEM-branded parts or factory warranty coverage should consider dealer-sourced components instead.

Pros & Cons

Pros

• Good value: includes four coil packs and four spark plugs for a complete bank replacement.
• Reliable fit: customers report easy installation and exact matches for several model years.
• Improved performance: the iridium plugs and tested coils help reduce misfires and can clear check engine alerts.

Cons

• Compatibility limited to specific 1.8L L4 models; buyers must verify fit with the vehicle list or part numbers.

Specifications

Our Verdict

This set is a sensible, value-focused replacement for owners of compatible 1.8L Toyota, Scion and Lexus vehicles who want reliable ignition performance without parts guessing. The combination of durable coil construction and iridium spark plugs addresses common drivability issues and offers an OE-style fit, making it a practical choice for most repairs outside of dealer-specific warranty needs.

Frequently Asked Questions

Will this kit fit my Prius?
It fits Prius models listed in the compatibility range for 1.8L L4 engines between the years shown; confirm fit by checking the vehicle list or part numbers on the detail page.

Do the spark plugs use iridium?
Yes, the included 93501 plugs use fine iridium electrodes and CNC-machined parts for improved ignition performance.

Does this solve a check engine light from misfires?
Customers report the coils and plugs can eliminate misfires and remove related check engine codes when those parts are the root cause.